Apparently, Gallifreyans don't have protates. It's in one of the short stories in Short Trips: Past Tense. Of course, that particular anthology also contains a story where Shakespeare is secretly Christopher Marlowe, so ...
*wonders what percentage of slashfic would be Jossed if anyone paid attention to this*
*wonders what percentage of slashfic would be Jossed if anyone paid attention to this*